C# 外部请求的身份验证-如何在SOAP头中传递用户凭据？

有一个简单的WCF Web服务。对web服务的所有外部请求都必须经过身份验证

网络服务合同：

namespace SimpleCustomService
{
    [ServiceContract]
    public interface UsrIService
    {
        [OperationContract]
        string SayHello();
    }
}

namespace SimpleCustomService
{
    public class UsrService : UsrIService
    {
        public string SayHello()
        {
            return "Hello";
        }
    }
}

Web服务的实现：

namespace SimpleCustomService
{
    [ServiceContract]
    public interface UsrIService
    {
        [OperationContract]
        string SayHello();
    }
}

namespace SimpleCustomService
{
    public class UsrService : UsrIService
    {
        public string SayHello()
        {
            return "Hello";
        }
    }
}

通过使用

wsdl.exe

实用程序，我生成代理类来调用Web服务的方法

生成的代码如下所示：

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Serialization;

// 
// This source code was auto-generated by wsdl, Version=4.6.1055.0.
// 


/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.6.1055.0")]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Web.Services.WebServiceBindingAttribute(Name="BasicHttpBinding_UsrIService", Namespace="http://tempuri.org/")]
public partial class UsrService : System.Web.Services.Protocols.SoapHttpClientProtocol {

    private System.Threading.SendOrPostCallback SayHelloOperationCompleted;

    /// <remarks/>
    public UsrService() {
        this.Url = "http://localhost:8080/0/ServiceModel/SimpleCustomService.svc/soap";
    }

    /// <remarks/>
    public event SayHelloCompletedEventHandler SayHelloCompleted;

    /// <remarks/>
    [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/UsrIService/SayHello", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
    [return: System.Xml.Serialization.XmlElementAttribute(IsNullable=true)]
    public string SayHello() {
        object[] results = this.Invoke("SayHello", new object[0]);
        return ((string)(results[0]));
    }

    /// <remarks/>
    public System.IAsyncResult BeginSayHello(System.AsyncCallback callback, object asyncState) {
        return this.BeginInvoke("SayHello", new object[0], callback, asyncState);
    }

    /// <remarks/>
    public string EndSayHello(System.IAsyncResult asyncResult) {
        object[] results = this.EndInvoke(asyncResult);
        return ((string)(results[0]));
    }

    /// <remarks/>
    public void SayHelloAsync() {
        this.SayHelloAsync(null);
    }

    /// <remarks/>
    public void SayHelloAsync(object userState) {
        if ((this.SayHelloOperationCompleted == null)) {
            this.SayHelloOperationCompleted = new System.Threading.SendOrPostCallback(this.OnSayHelloOperationCompleted);
        }
        this.InvokeAsync("SayHello", new object[0], this.SayHelloOperationCompleted, userState);
    }

    private void OnSayHelloOperationCompleted(object arg) {
        if ((this.SayHelloCompleted != null)) {
            System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
            this.SayHelloCompleted(this, new SayHelloCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
        }
    }

    /// <remarks/>
    public new void CancelAsync(object userState) {
        base.CancelAsync(userState);
    }
}

/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.6.1055.0")]
public delegate void SayHelloCompletedEventHandler(object sender, SayHelloCompletedEventArgs e);

/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.6.1055.0")]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
public partial class SayHelloCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

    private object[] results;

    internal SayHelloCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : 
            base(exception, cancelled, userState) {
        this.results = results;
    }

    /// <remarks/>
    public string Result {
        get {
            this.RaiseExceptionIfNecessary();
            return ((string)(this.results[0]));
        }
    }
}

我收到以下错误消息：

"UsrService does not contain a difinition for ClientCredentials"

---

我是否应该将缺少的代码包含到生成的代理类中？

您应该像这样从凭据缓存向其传递凭据：

client.Credentials = System.Net.CredentialCache.DefaultCredentials;

或者明确地说：

client.Credentials = new System.Net.NetworkCredential("username", "password");

我还喜欢使用

client.PreAuthenticate=true，但可能有一些问题，我忽略了